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cover of episode Why do we smell (and how concerned should we be about it)?

Why do we smell (and how concerned should we be about it)?

2025/4/24
logo of podcast The Dose

The Dose

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Sarah Everts
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Sarah Everts: 人体气味并非单一气味,而是由数百种挥发性小分子组成,这些分子主要由皮肤上的细菌分解汗液和皮肤分泌物产生。腋窝和私处的气味尤其强烈,因为这些部位的顶泌汗腺在青春期后会分泌一种蜡状液体,为细菌的生长提供了理想环境。不同身体部位的微生物群不同,因此气味也各不相同。体味并非完全由个人决定,而是由皮肤微生物群的活动所决定,这是一种细菌分解汗液和皮肤分泌物的过程。从进化的角度来看,青春期体味加重可能与伴侣选择和信息素有关,人类可以通过气味识别亲属、感知他人的焦虑情绪,甚至识别免疫系统被激活的个体。然而,现代社会对体味的焦虑过度,这与20世纪的营销活动有关,这些活动加剧了人们对体味的恐惧,并将其与特定产品联系起来。 我们应该对体味更加宽容,因为每个人都会有体味出现的时候。全身使用止汗剂是不健康的,因为这会破坏皮肤微生物群,而皮肤微生物群对健康有益。适量使用止汗剂中的铝不会对健康造成危害。人们选择朋友也可能基于气味相似性,这体现了一种群体认同感。一项研究表明,女性更喜欢气味与自身基因互补的男性,因为这能保证后代拥有更强的免疫系统。 Brian Goldman: 作为一名医生,我对体味相关的医学知识了解有限,因此我邀请了Sarah Everts来解答我的疑问。在节目中,我与Sarah Everts讨论了人体气味的形成原因、不同部位气味的区别、青春期体味加重的机制、体味在人类进化和社会交往中的作用,以及如何健康地处理体味等问题。我们还探讨了现代社会对体味的过度焦虑,以及相关的营销策略。通过与Sarah Everts的对话,我更深入地了解了人体气味背后的科学原理和文化内涵,也对如何以更健康、更平衡的方式看待体味有了新的认识。

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Body odor is a complex phenomenon influenced by bacteria, genetics, and sweat glands. The episode explores the science behind body odor, its evolutionary origins, and its role in social interactions.
  • Body odor is caused by volatile organic compounds released by bacteria metabolizing sweat.
  • Apocrine sweat glands, activated during puberty, produce a waxy fluid that bacteria feed on, creating odor.
  • Body odor plays a role in mate selection and social bonding, potentially signaling immune system strength.

Shownotes Transcript

Whole-body deodorants are the latest fad designed to mask our scent, but not everyone agrees that body odour is a bad thing. Sarah Everts, Carleton University associate professor and author of The Joy of Sweat: The Strange Science of Perspiration, explains why we smell, why we should pause before applying whole-body deodorant, and why we should chill a little when it comes to BO.

For transcripts of The Dose, please visit: lnk.to/dose-transcripts). Transcripts of each episode will be made available by the next workday. For more episodes of this podcast, click this link.)